And you should NEVER walk around in your house with a firearm of any type that may be visible to passers by... that is a great way to have a visit from the ETF

You beat me to it.

It's not illegal or anything to walk around your house or your property with firearms and whatnot, it's just inadvisable. Basically, it's asking for the cops to come knocking at your door with a few questions of their own.

All it takes is one uninformed neighbor who sees you to sound the alarm.